Data can be loaded from CSV, MySQL, JSON and manually entered data.

Demo:
https://wysiwygwebbuilder.com/support/demos/googlegeochart.html
More information:
https://www.wysiwygwebbuilder.com/googlegeochart.html
The demo version can be downloaded via the Extension Manager (Menu->Tools->Extension Manager->Online Gallery->Miscellaneous).
The demo is fully functionality, however the properties will not be saved.
The price is $4.95
https://secure.2checkout.com/order/checkout.php?PRODS=46072852